Sherwin-Williams Protective & Marine has introduced a way to mitigate the dangerous condition of corrosion under insulation (CUI) with its new line of Heat-Flex^® CUI-mitigation coatings. The line includes Heat-Flex^® ACE (Advanced CUI Epoxy), which is an ultra-high-solids epoxy novolac developed with a functional chemical enhancement for CUI mitigation. The coating performs the best at mitigating CUI out of any other formulation available. In addition, three coatings featuring a high concentration of micaceous iron oxide (MIO) pigment round out the lineup, including Heat-Flex 750, Heat-Flex 1200 Plus and Heat-Flex 650. The MIO-enhanced coatings offer significantly improved CUI-mitigation performance compared to similar formulations currently on the market.

“The battle against CUI is never-ending, as coated steel encapsulated in insulation will inevitably corrode over time. Our goal is to mitigate that corrosion process for as long as possible, and we’ve developed some high-performance coatings that enable just that,” said Mark Rubio, Energy Business Manager, Sherwin-Williams Protective & Marine. “For example, Heat-Flex ACE is the best product we’ve tested for long-term CUI mitigation. We anticipate it becoming a preferred specification solution as the industry gains experience with this enhanced CUI-mitigation system. We have also boosted the market’s CUI-mitigation capabilities for existing specifications with the three MIO-enhanced Heat-Flex coatings.”